US1639826A - Dobby cylinder - Google Patents

Description

Aug. 23, 1927. 1,639,826

W. M. WATTIE DoBBY CYLINDER Filed March 27. 1926 i o l I /v VEN Tale I WATT/E Y f/. '/f?? Patented Aug. 23, 1927.

UNITED STATES" 1,639,826 PAT-ENT QFFICE.

WrLLrAM M. WATTIE, OE WORCESTER, lvrAssACnr-ISETTS, Assrenon To CROMT'TON ef KNOWLES LOOM WORKS, OE WORCESTER, MASSACHUSETTS, A CORPORATION OE MASSACHUSETTS.

rlhis invention relates to improvements in the cylinder. yof the well-known Knowles head and it is the principal object of the invention to construct the cylinder ot reversible parts so VIt is a further object of my invention to` provide a cylinder formed in .partby a mandrel non-circular in cross section to receive correspondingly formed laminations` having' a blank and a toothed area` the toothed area lying symmetrically with re spect to the non-circular portion Ol' the laminations so that Awhen the sections are reversed the toothed section will occupy the same relative angular position with respect to the mandrel.v n

lli-fith these and other objects in view which will appear as thedescription proceeds, myY invention resides in the combination and arrangement O parts hereinafter described and set forth in the claims. y

In the accompanying ydrawings wherein I have shown a convenientembodiment of my invention, i

Fig. l is a vertical section through a portion' of the well-knownA Knowles head of the 4-typ'e Shown in patent to Knowles No.1

136,350, showing -thecylinders made accor ing to -my invention,`

Fig, 2 1s an enlarged section on line `2--2v or" Fig. 1,

Fig. 3 is an enlarged side elevation of the cylinder taken in the direction of arrow 3,V

Fig. 1,

Fig. 4 is a front view of one of the laminations shown in Fig. 3after the leading tooth ot the saine has become worn, and

Fig. 5 is a fragmentary view 'of the lamination shown in Fig. 4 lbut showing the same reversed with the worn part of the tooth at the finishing end of the section of teeth.

Referring more particularly to the' drawings it will be seen that I have provided loom arches 10 having a head trame 11 secured thereto in which is securedI a heel pin 12. Vibrator levers 13,`one of which is shown in the drawings, are .pivoted on the heel pin 12 and there is mounted .on each vibrator for limited rotation ay vibrator gear 14 pivc otally connected as atv15 to one end Oi a connector The other end o'e'acli com DOBBY CYLINDER.

Application filed March 27, 1926. Serial No. 98,016.

tively, which form the subject matter' ofV my present invention and inasmuch as both cylinders are alike as far as my present invention is concerned, but one will be described;

As shown more particularly in Figs. 2 and 3, each cylinder is provided with a mandrel 32 having a flattened portion 33 and having extending therethrough a driving shaft 34 formed `with lflanges 35 and 36, respectively,

lying at the yOpposite yends Ot the mandrel and. engaging the'interior 'surface thereof.

'- Flange 35 grooved as at 37 to receive a holding screw 38 threaded through one end Ot "the mandrel and by means of' which the mandrel is heldin xed angular relation with respect to .the shaft 34. i

Said mandrelis provided with a shoulder 39 near one end thereotwhich forms a backing for a series 'of laminated sections 40 shown more 'particularly lin Figs. Q/and 4. Each of said sections is provided with a blank peripheral area '41 and a'toothed area y42.*and is provided with an opening 43 corresponding' :in-size and shape to the crosssection ofthat part of the mandrel designed to receive said sections.l The laminations are provided with openings 44 to receive tie rods 45 which extend'therethrough and alsofshoulder 39 to hold the laminations or sections 40 Securely -to the: mandrel 39.. It will be noted that the toothed larea of the lamina/tions land the flattened surface 46 are symmetrical with respect to a diameter which passes through the openings 44. y

. Under normal yOperation the shaft 34 is driven (by mechanism not shown but similar to that setforth in the aforesaid .patent to Knowles)` and the cylinders 30 and 31 are rotated constantly-in Opposite directions as indicated by the `arrows in Fig. 1. Asshown in said ligure thevbratorlevere are down so that the vibrator' gears 14 are in position Il will be seen that the vibrator gear is provided with a blank space 51 formed by omit-Y ting one tooth on the vibrator gear and as the leading tooth of the cylinder becomes worn the teeth thereof will not register correctly with the teeth of the vibrator gear 14. Vhen this condition arises it is necessary merely to reverse the laminations 40, turning them from the position shown in Fig. 4 to that shown in Fig. 5 where it will be seen that the tooth 52 which was formerly the last tooth of the section is now the leading tooth. The surface of the new leading tooth which is now in position to engage the vibrator gear did not have driving connection with thelatter before the reversal so that it is as originally formed and the teeth of thecylinder and the vibrator gear will mesh properly. Inasmueh as the'toothed section 42 and fiattened surface 46 are symmetrically disposed with respect to a diameter passing through the bolt holes 44 and the diameter of the cylinder the laminationsmay be reversed without disturbing the proper position of the toothed sections. f

From the foregoing it will be seen that I have provided a multi-part cylinder for the well-known Knowles head so formed that when the leading or vibrator gear engaging tooth becomes worn the sections or laminations may be reversed to present a subst-antially new and unwornV toothed surface to the vibrator gears. While I haveshown a comparatively large number of laminations yet it is to be understood that I am not limited to the thicknessor number of laminaparts is permissible because of the fact that the toothed section and the iiattened surface' on the interior of each of the laminations is symmetrical withl respect to a diameter thereof passing through'the bolt holes 44.

IIaving thus described my invention it will be apparent that, changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope ofthe invention, and I do'not wish to he limited to the details herein disclosed, but what I claim is:

l. In a loom Vpattern mechanism having a vibrator lever and a vibrator gear therefor, a cylinder to actuate. the vibrator gear, said cylinder having a reversible element thereon a portion of which is provided with teeth to engage the gear and a portion of which is blank, and positive driving connections between the element and the cylinder, the teeth of the element and the driving connection thereof between the same andthe cylinder being symmetrical with respect to a diameter of the element to the end that said element. may be reversed on the cylinder andhave the toothed section in the same relative angular position with respect to said cylinder and vibrator gear. i

2. In a loom pattern mechanism havinfr a vibrator lever and a vibrator gear therefor, a. cylinder to actuate the gear, said cylinder having a.l non-circular mandrel, anda plurality of laminations thereon having non-cin' vibrator lever and a vibrator gearA therefor,V

a cylinder to actuate the gear, said cylinder having a rotating mandrel, a series of laminations for the mandrel, each lamination having a portion only of the peripherythereof provided with teeth, and means defining a driving connection between the mandrel and Htl the laminations, said means and the toothed section of the vibrator lying symmetricallyv with respect to a diameter of the laminations to the end that said lamination may be re-l versed on the cylinder and have the toothed section inthe same relative angular posi tion with respect to said cylinder and vibrator gear.

4. Ina loom pattern mechanism having a vibrator lever anda vibrator gear therefor,

cylinder for the vibrator gear normally constantly driven in the same direction, a mandrel forming part of the cylinder, aremovable element on the mandrel, said element having-a section of teeth on a portion only of the periphery thereof, means extending through the elementand a portion of the mandrel to hold the element to said mandrel,

said means and the toothed sectionof the' element being symmetrical with respect to a diameter of the elementrto the end Ythat said element may be reversed on the cylinder and have the toothed section in the same A relative angular position with respect to said cylinder y and vibrator Y gear.

5. In a loom lpattern mechanism having a n tion which interrupts the circular form of the opening so that said laminations lit snugly on the mandrel, bolts extending parallel to the axis of the cylinder through the laminations and a portion of the mandrel, and a section of teeth formed on each lamination extending over a portion only of the periphery of the laminations, the flattened portion of the mandrel and openingin the lamination, the section of teeth of the laminations and the bolts all being symmetrically disposed With respect to a diameter of the laminations,i\vhereby the laminations may be reversed and maintain the same angular relation with respect to the cylinder and vibrator gear.

6. A cylinder for a loom head motion having a vibrator gear, said Cylinder Comprising a mandrel and a plurality of laminations thereon, each lamination having teeth eX- tending around a portion only of the periphery thereof, said laminations being reversible on the mandrel to assume the same angular position with respect to the mandrel and vibrator gear as existed before the reversal,

said laminations and central portion having engaging non-circular portions.

7. A cylinder for a loom head motion having a vibrator gear, said cylinder comprising a mandrel partly circular and partly non-circular in cross-section, a shoulder formed integral with the mandrel, a plurality of laminations mounted on the mandrel, each lamination having a toothed area and a blank area and each lamination having an opening therethrough having circular and non-circular portions to fit snugly over the mandrel, and securing means extending longitudinally of the cylinder passing through the laminations and the shoulder.

8. A cylinder' for a loom head motion having a vibrator gear, said cylinder comprising a mandrel partly circular and partly non-circular in cross-section, a shoulder formed integral with the mandrel, a plurality of laminations mounted on the mandrel, each lamination havingV a' toothed area and a blank area and each lamination having an opening therethrough having circular and non-circular portions to fit snugly over the mandrel, and securing means eX- tending longitudinally of the cylinder pass- 'ing throughthe laminations and the shoulder, the toothed portions of the laminations and non-circular portion of the mandrel all being symmetrically disposed with respect to a diameter of the mandrel.

In testimony whereof I have hereunto affixed my signature.

VILLIAM M. WATTIE.

Images